So.. the idea is creating smart assets with price feeds based on feeds of popular smart assets (bitCNY, bitUSD) but raised to the power of 2 or 3
Any change in the original CNY, USD price feeds will produce bigger change in squared and cubed alternatives.
The point is those alternatives are more risky than base assets, but possible profits are also higher

For example:

Current USD price: 4.6 BTS/USD, CUBED.USD price would be 97.336 BTS/CUBED.USD
Assume we have 2000 BTS and buy both USD and CUBED.USD, with 1000 BTS for each.
Now we have 217.391304348 USD and 10.273691132 CUBED.USD,

Let's say next day USD prices changes to 4.8 BTS/USD, CUBED.USD price will be 110.592 BTS/CUBED.USD
Selling 217.391304348 USD we will get 1043.47826087 BTS (+4.3%)
Selling 10.273691132 CUBED.USD - 1136.18804967 BTS (+13.6%)

The same math works with loses

What do you think about the idea and naming (SQUARED.USD, SQUARED.CNY, CUBED.USD, CUBED.CNY)?

One more related thing:
What about INVERTED.USD, INVERTED.CNY with the power of -1 (x^-1 = 1 / x)?
The benefit would be ability to play short when base assets' prices go up..x

It seems that it's impossible to get such info using the standard wallets (like wallet.bitshares.org) or command line wallet. However there are websites that analyze the bitshares blockchain and provide information about asset holders. These websites are http://cryptofresh.com and http://bitshares-explorer.io/

What if a feed-producer, after some period of time, pushes a really low price feed (because of bad intent or software error), then she, or someone else, borrows huge amount of the asset from the blockchain with almost zero collaterial and sells it to the market devaluating the asset and getting all the buy orders? Are smart assets more safe from that perspective than regular UIA? How can a trader (or a smart asset owner) be sure that the price feed will be correct in the future? And is it actually safe to add a feed producer you don't know?

We've created 3 new smart-assets: INDEXSPX (S&P 500), INDEXDJI (Dow Jones Industrial Average), INDEXNASDAQ with a precision of 8, paired them with BTS.
The script that gets latest index values, calculates price and pushes it to the blockchain is ready. Two separate 24/7 working servers are also ready to run the script. 
The question is how to do everything right? Should we convert the indexes to BTS price according to BTS/USD rate or just push the index value?

For example: Dow is 23,932.76 at the moment. Should we push 23,932 BTS or 23,932 / 0.144462 (USD/BTS rate)

Any other recommendations until its not too late?

Thanks!